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23,598 Article Results

Research on the Pulsed Magnetic Field Device for Sterilization of Fruit and Vegetable Equipment

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2198
Liu Mingdan , Chen An Jun , Wang Yong , Tan Pengfei , Zhao Sifen
In view of the requests of the sterilization device of the fruit and vegetable that integrate cleaning and juicing together, and combined with the electromagnetic theory and the cold sterilization technology which is in common use in modern food industry, circuits are designed for the pulsed magnetic field sterilization device of the integrated machine .This circuits chose a linear solenoid in which r= 30mm, l= 200 mm. The experiment shows that the pulsed magnetic field produced by the device can achieve a better effect in killing bacillus coli, beer yeast and staphylococcus aurous, etc. Compared with the traditional sterilization device, the bactericidal effect of the pulsed magnetic field sterilization device is more obvious so that it will be the direction of the development of food equipments. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2388
Volume: 11
Issue: 4
Page: 2084-2087
Publish at: 2013-04-01

Controllable Alternating Magnetic Technology Research for Inducing Plants Breeding on Ground

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2148
Guo-wen HU , Li-sheng ZHANG , Lin WANG , Yin-jie WANG
Controllable alternating induction magnetic field generation technology which induces plant seeds to breed on floor space has been developed. The incentive ferrite induction coil is used in the device to produce induced magnetic field. The common AC-DC-AC topology was adopted for the variable frequency power supply, realizing the VF. AC-DC-AC AC power inverter circuit adopts SPWM inverter frequency modulation and voltage regulation mode, realizing the effect of sinusoidal variable. In order to improve the conversion efficiency of the system electrical energy to magnetic energy, the RLC series resonant circuit is chosen in the circuit of output magnetic field. The induction magnetic field in the air gap is the work area for seeds experiment. Its adjustable frequency range: 20~200Hz, adjustable field range: 0~500Gs. The experimental study of rice seeds shows that different magnetic environment has a significant impact on the biological characteristics of rice seeds. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2326
Volume: 11
Issue: 4
Page: 1741-1749
Publish at: 2013-04-01

The Life Cycle Reliability Evaluation of Optical Cable

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2189
Cui Limin , Wu Yunna
Along with the optical fiber communication technology is widely used in power system, optical cable fault which will lead to failure has become an important factor influencing power grid reliability, but the existing optical cable evaluation index is single, only statistical cable fault conditions operation index, can not fully reflect the actual reliability of cable. This paper tries to construct a whole life cycle based on optical cable statistical reliability evaluation index system, uses the entropy method to evaluate the reliability of the optical cable is more objective, true, to carry out cable reliability research has certain reference significance. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2379
Volume: 11
Issue: 4
Page: 2024-2028
Publish at: 2013-04-01

Dynamic Routing and Resource Assignment Algorithm In sloted optical Networks

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2157
Bisheng Quan , Hui Li , Zichun Le
All-optical wavelength division multiplexing networks are the most promising candidate for the next generation wideband backbone networks. To improve the utilization of wavelength, time division multiplexing technology is introduced. The routing, wavelength and time-slots assignment problem was studied in such time-space switched networks. Two new dynamic algorithms were proposed which distribute slots of the session request on multiple different wavelengths of single fiber separately based on fixed alternate routing and adaptive routing policy. Especially in LLR-MWLB algorithm, network link weights adjust adaptively with the available time slots of each link and load balancing strategy is adopted. The effectiveness of the proposed algorithms is demonstrated by simulations and results show the better performance. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2336
Volume: 11
Issue: 4
Page: 1813-1821
Publish at: 2013-04-01

The Frequency Characteristics Simulation of Traveling Wave Thermo-Acoustic Engine

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2209
Ma Lili , Xia Jiakuan , Guo Tie
The frequency characteristics of thermo-acoustic engine mainly depend on the internal working medium and device structure. The linear resonant system is consisted of ironless permanent magnet linear synchronous motor and the resonant spring. Through the analysis of thermo-acoustic power generation system model, the parameters of linear resonant system are determined by building a mathematical model of linear resonant system. Combined with modern control theory and robust control theory, a robust position controller was design. The theoretical analysis and simulation proved that the controller can make the linear resonance system obtain higher frequency response and displacement accuracy. Controller response time and output is more stable, the controller meets the necessary optimal control. The controller is suitable for thermal acoustic generator control system with high reliable and robust quantitative. The designed linear resonance system can well simulate the frequency characteristics of thermo-acoustic engine. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2400
Volume: 11
Issue: 4
Page: 2157-2163
Publish at: 2013-04-01

Casting Forming Process Simulation of Aluminum Flywheel

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2174
QIAO Yin-hu , ZHANG Chun-yan , CHEN Jie-ping
Simulating the forming process of casting in this paper, according to two kinds of analysis results of the designed model, the reasonable structure, pouring temperature and riser selecting of the flywheel are determined to ensure the quality of castings. The using of simulation software before the actual molding can get rid of the possible hidden danger, to shorten the product development cycle, save money, improve product quality. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2364
Volume: 11
Issue: 4
Page: 1930-1933
Publish at: 2013-04-01

A Method for Eletric Vehicle Ownership Forecast Considering Different Economic Factors

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2221
Hanwu Luo , Fang Li
The construction of electric vehicles (EVs) charging station needs to be planed according to the ownership of EVs, traffic condition, population etc. Therefore a BP neural network based method to forecast the EV ownership for a city is presented in the paper, which considers the influence on the EV ownership caused by many related economy factors, including GDP of a city, vehicle production, per capita crude steel production, per capita generation capacity, road passenger traffic, highway mileage and the total population.  A BP neural network is set up for the forecast of EV ownership, and the input layer contains seven neutrons, which represent different economic factors. There are three neurons in its hidden layer, and the output is the EV ownership.  Then the method to predict the EV ownership of a city is presented, which is based on the forecast of the civilian car ownership in a city and the country. The EV ownership in the city of Chongqing from the year 2013 to 2020 is predicted, and the accuracy of the model is verified firstly, then the EV ownership in Chongqing is obtained, which is helpful to make plans for the development of electric vehicle. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2544
Volume: 11
Issue: 4
Page: 2239-2246
Publish at: 2013-04-01

Wavelength Demultiplexer using Heterostructure Ring Resonators in Triangular Photonic Crystals

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2145
Mohammad Reza Rakhshani , Moahmmad Ali Mansouri-Birjandi
In this Paper a new type of wavelength demultiplexer using ring resonators in 2D triangular photonic crystal is presented. The designed demultiplexer contents two regions which each own a resonator. Two dielectric constants are used in this demultiplexer. These structures which are called hetero have the capability to be used in wavelength division multiplexing (WDM) systems. The average transferred power for the two output channels is about 93%. The crosstalk between output channels was more than -18.5dB, also the overall size of the structure was about 144µm2 which is so appropriate for fabrication and integration. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2331
Volume: 11
Issue: 4
Page: 1721-1724
Publish at: 2013-04-01

Background Modeling Method Based on 3D Shape Reconstruction Technology

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2197
Xue Yuan , Xiaoli Hao , Houjin Chen , Xueye Wei
In this research, we present a novel dynamic background modeling method based on reconstructed 3D shapes, which can solve background modeling problems of multi-camera in real-time. While 3D shape reconstruction is a popular technology widely used for detecting, tracking or identifying various objects, little effort has been made in applying this useful method to background subtraction. In this work we propose an approach to using 3D shape reconstruction technology to develop a novel decision making mechanism for background image updating. This 3D shape reconstruction based background subtraction method is adaptive to changes in illumination, capable of handling sudden illumination changes as well as complex dynamic scenes efficiently. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2387
Volume: 11
Issue: 4
Page: 2079-2083
Publish at: 2013-04-01

A novel discrete differential evolution algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2167
Lingjuan HOU , Zhijiang HOU
Aiming at the stochastic vehicle routing problems with simultaneous pickups and deliveries, a novel discrete differential evolution algorithm is proposed for routes optimization. The algorithm can directly be used for the discrete domain by special design. Computational simulations and comparisons based on two kinds of problems of different sizes of SVRPSPD are provided. Results demonstrate that the proposed algorithm obtains better results than the basic differential evolution algorithm and the existing genetic algorithm. http://dx.doi.org/10.11591/telkomnika.v11i4.2346 
Volume: 11
Issue: 4
Page: 1883-1888
Publish at: 2013-04-01

Research on Flow Characteristics of Ultra-high Pressure Impinging Stream Micro-generator

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2200
LI Guang-ji , LU Zheng-wen
Design a new dynamic ultrahigh pressure structure in this article, This structure include three main zones. Simulate and analyze flow characteristics of three zones in details, providing the basis for the design of micro-size structure with ultra-high pressure. Liquid has gone through three broken and decentralized processes in micro-channels zone、impacting wall zone and flow impinging each other zone, find rule of mirror distribution in impinging zone. According to which, obtain the structure is reasonable. The fresh red wine is experimented, verifying that to obtain the same effect, dynamic ultrahigh pressure method greatly reduce energy consumption than ultra-static pressure. Further put forward and verifying a new method that is combining static and dynamic ultrahigh pressure method, can use a relatively lower pressure to get higher pressure treatment effect. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2390
Volume: 11
Issue: 4
Page: 2093-2101
Publish at: 2013-04-01

Design and Analysis for the Y-axis linking Part of PCB Drilling Machine

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2172
Feida Ma , Changtao Cai , Liangjin Cai , Jingxing Qi
Aiming at the problem of the printed circuit board (PCB) Y axis linking part, we establish the 3D three-dimension model by using the Solidworks software , analysis the structure of the linking part and making appropriate solutions according to its works process and machining process. Finally, we use finite element method to analysis with COSMOSwork software to find the priory solution, improve the R&D speed, reduce processing costs and provide a reliable basis for the machine tool structure optimization design. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2362
Volume: 11
Issue: 4
Page: 1916-1923
Publish at: 2013-04-01

Modeling and Experimental Study on Grid-Connected Inverter for Direct Drive Wind Turbine

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2195
HUANG Wang-jun , ZENG Zhi-gang , ZHOU Hui-fang , TEN Yuan-jiang , Li Li
This paper designs a dual topological structure of grid-connected inverter for high-power wind turbine, introduces PWM converter's operational state, and establishes its mathematical model, then it puts forward the dual closed-loop vector control strategy of grid-side converter based on dq coordinate. The combination of the dual topological structure and decoupling control realizes the functioning of high-power factor and two-way transmission of energy. Grid-side converter can stabilize DC side voltage and adjust active or reactive output current independently when wind velocity changes rapidly, which leads to the change of output power in generator. The hardware experiment and simulation results verify the feasibility of the proposed control scheme in both the high stability accuracy and excellent property of grid-connection. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2385
Volume: 11
Issue: 4
Page: 2064-2072
Publish at: 2013-04-01

Boost Action Recognition through Computed Volume

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2165
Li Wang , Ting Yun , Haifeng Lin
We detect interest points in temporal-spacial space and use the local feature plus their positions to recognize action in a video. Although some previous methods take advantage of the position of each interest point besides the local feature of them, and achieve good performance, it consumes much time to position these points due to the complexity of an action. We propose two simple methods to position each interest point, and design a new feature for action recognition. Evaluation of the approach on two sets of videos suggests its effectiveness. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2344
Volume: 11
Issue: 4
Page: 1871-1876
Publish at: 2013-04-01

Fabrication of Plane Transient Diode

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2199
An Yu , Zhang Yu Ding , Fu Xing Hua
The fabrication of horizontal structure and vertical structure is proposed based on the parameters of the transient diode, theory is combined with practice in the progress of design, the picture of structural parameters is charted in this paper, establishes the foundation for mading the transient diode with reliability. Transient diode horizontal structure design [is an important element in the design.The mission is based on the request of parameters, selecting the planar geometry of the die and its dimensions. For planar diode, the geometry of die plane is determined by lithography. The design of the transverse structure is the design of the lithographic version of the graphical structure. The area of the base region of the buried layer is known based on the design rules .Buried layer area can roughly calculated, it should be greater than the area of the diffusion of base region andless than the area of the chip. Its widthisto cross above the width of the base region and the opening of the lead hole, i.e. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2389
Volume: 11
Issue: 4
Page: 2088-2092
Publish at: 2013-04-01
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